CN109020364A - A kind of sandstone analog material and preparation method thereof - Google Patents
A kind of sandstone analog material and preparation method thereof Download PDFInfo
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- CN109020364A CN109020364A CN201810865232.1A CN201810865232A CN109020364A CN 109020364 A CN109020364 A CN 109020364A CN 201810865232 A CN201810865232 A CN 201810865232A CN 109020364 A CN109020364 A CN 109020364A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
- G01N2001/386—Other diluting or mixing processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The present invention provides high-intensitive high brittleness analog materials of a kind of sandstone and preparation method thereof.Raw material include quartz sand, silicon powder, cement, distilled water and water-reducing agent.Physico-mechanical properties and micro character based on protolith are used in the method for aggregate controlled material property, select quartz sand to improve the brittleness of material, select silicon powder to improve the intensity of material；The brittleness and intensity of class sandstone material are realized, analog material and the main physical and mechanical parameter of protolith (density, elasticity modulus, cohesive strength, internal friction angle, uniaxial compressive strength, tensile strength and Poisson's ratio etc.) meet the theory of similarity.Successfully simulate the feature of sandstone in Xinjiang Tianshan Highway Lithological Slope.Material requested type of the present invention is few, at low cost, and producing efficiency is high, has wide applicability.
Description
Technical field
The invention belongs to rock-like materials test material preparation technical fields, and in particular to a kind of sandstone analog material and its preparation
Method.
Background technique
Sandstone is one of the most common type rock in rock engineering, is formed by various gravels are cementing, due to slacking and stripping
The sedimentary rock that erosion effect generates.Joint fissure height itself development, using natural sandstone rock sample exist sampling success rate it is low and
The big problem of sample mechanical property difference is difficult to carry out quantitative research to the mechanics index of physics of rock.And model test has
The advantages such as controllability is strong, the period is short, expense is low can effectively avoid many problems faced when spot sampling, such as extraneous
Influence factor is more, research expenditure is high, the period of complicated condition and sampling is long etc..Model test passes through the structure feature rock mass
And the engineering effect mechanics Unified Model of environmental effect and rock mass is into indoor simulation test, simulates the deformation, broken of rock mass
Bad process and mechanism become a kind of effective method of research crack jointed rock mass.
It is the main means of study of rocks mechanics engineering and problem in science using Equivalent Materials Testing.Patent of invention CN
107814546 A disclose high high severe analog material of brittleness of a kind of deep hard rock high intensity and preparation method thereof, successfully simulate
The feature of silk screen griotte；104974533 A of patent of invention CN discloses a kind of preparation side of high brittleness rock-like materials
Method, provide it is a kind of enbrittle, the high brittleness rocks material that homogenieity is good, intensity is high, elasticity modulus is high, easy to form
Material；108069651 A of patent of invention CN discloses a kind of analog material and preparation method thereof for simulating rock mass, can directly obtain
The deformation information of model test greatly facilitates the test job in test without additional test equipment.
Currently, the geotechnical engineering geological structure that China is building and will build is complicated, the difference of monolithic stability is influenced
The rock mass performance difference of classification is larger, therefore during mechanical models for rocks experimental study, needs to prepare and meets similar pass
The cast material of system simulates the rock mass of different performance, to understand engineering construction to influence caused by rock mass.Above-mentioned similar material
Preparation method for material is only applicable to a certain rock mass, is not able to satisfy for the analog material of sandstone.Therefore, research and development nature is more wide
General sandstone analog material and preparation method thereof provides a kind of rational method and effective means for the research of sandstone mechanical property.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of sandstone analog materials and preparation method thereof, thus using with
The analog material of rock similar (brittleness and dilatancy)-sandstone analog material makes class sandstone gangne sample, existing to solve
Technical problem.
To achieve the goals above, the technical solution used in the present invention is: a kind of sandstone analog material, composition component
Include:
Aggregate: quartz sand and silicon powder；
Cementing material: cement；
Additive: water-reducing agent and distilled water.
Based on the above technical solution, the present invention can also have following further specific choice or optimum choice.
Wherein, the constituent is based on parts by weight are as follows: and 15-25 parts of cement, 12-20 parts of quartz sand, silicon powder 1.5-3.5
Part, 4-7 parts of distilled water, 0.1-0.5 parts of water-reducing agent.
Wherein, the quartz sand particle size is 50-120 mesh, and the silicon powder partial size is 200-350 mesh.
Wherein, the cement is portland cement.Specifically, being the portland cement of label 425 or 525.
Further, the present invention also provides the preparation methods of above-mentioned sandstone analog material comprising following steps:
1) will based on parts by weight cement 15-25 parts, 12-20 parts and silicon powder 1.5-3.5 parts of quartz sand are mixed and stirred for
It is even, obtain mixed powder a；
2) will based on parts by weight distilled water 4-7 parts, 0.1-0.5 parts of water-reducing agent are mixed and stirred for uniformly, obtaining mixing molten
Liquid b；
3) the mixed powder a is added into the mixed solution b, after being sufficiently stirred, is uniformly poured at a slow speed to mold
In, then mold placement shaking platform is fixed and vibrated 1-3 minutes, it is de- to stand 10-14h at dry and ventilated indoors
Mould is transferred in the curing pool that temperature is 20 DEG C after demoulding and conserves 26-30 days acquisition finished products.
Wherein, the speed of perfusion is 30-40m3/h。
Further, the application the present invention also provides above-mentioned sandstone analog material in terms of civil engineering.
Compared with prior art, the beneficial effects of the present invention are: sandstone analog material provided by the invention, based on protolith
Physico-mechanical properties and micro character use in the method for aggregate controlled material property, select quartz sand to improve material
Brittleness；The intensity of material is improved using silicon powder；The brittleness and intensity of class sandstone material are realized, analog material is main with protolith
Physical and mechanical parameter (density, elasticity modulus, cohesive strength, uniaxial compressive strength, tensile strength, Poisson's ratio and internal friction angle etc.) is full
The sufficient theory of similarity.Sandstone analog material provided by the invention successfully simulates the spy of sandstone in Xinjiang Tianshan Highway Lithological Slope
Sign.Material requested type of the present invention is few, at low cost, and producing efficiency is high, has wide applicability.
Wherein, quartz sand is coarse aggregate, is a kind of hard, wear-resisting, stable chemical performance silicate mineral.Quartz sand
Addition can form a kind of nucleus of crystal, make when hydrated cementitious in the surrounding crystalline of quartz sand and make crystal growth, also can be improved
The compactness of cement.In addition, quartz sand has certain activity, can carry out aquation to be filled with pore reduces water
The porosity of mudstone improves the globality of Behavior of Hardened Cement Paste, is allowed to more difficult and is destroyed.Therefore the addition of quartz sand can be effective
Improve the compactness of rock-like materials and the homogenieity of porosity and entirety.Silicon powder is fine aggregate in mixing material, and silicon powder exists
Play the role of filling and pozzolanic material in concrete, thus it is possible to vary some important physical properties indexs of concrete, silicon powder
Particle can fill the hole of relatively large cement granules, reduce the volume of hole, be effectively reduced in hydrated cementitious slurry
Pore-size improves distribution of pores, improves the strength of materials.For cement as cementing material, cementing strength is bigger than gypsum.In the present invention
Using portland cement, early strength is high, and the heat of hydration is high, and freexing tolerance is good, poor heat resistance, poor corrosion resistance, and drying shrinkage is smaller.Subtract
Aqua using volume is low, water-reducing rate is high, reinforcing effect is good polycarboxylate high performance water-reducing agent, be it is environmentally protective, be free of formaldehyde,
For environmentally friendly product.
Detailed description of the invention
Fig. 1 is the analog material and roughing sand rock single compressing stress-strain curve that the embodiment of the present invention 1 provides.
Fig. 2 is the analog material and roughing sand rock single compressing stress-strain curve that the embodiment of the present invention 2 provides.
Fig. 3 is the analog material and roughing sand rock single compressing stress-strain curve that the embodiment of the present invention 3 provides.
Specific embodiment
For a better understanding of the present invention, with reference to the accompanying drawing and the specific embodiment content that the present invention is furture elucidated,
But the contents of the present invention are not limited solely to the following examples.
Embodiment 1:
Present embodiments provide a kind of sandstone analog material formula:
Aggregate is quartz sand (50 mesh) silicon powder (350 mesh), and cementing material is cement, and additive is water-reducing agent, distilled water.Its
In based on parts by weight, cement: quartz sand: silicon powder: distilled water: water-reducing agent=20:16:2.2:5.6:0.2.
The preparation method of the analog material is present embodiments provided, operating procedure is as follows:
A. cement, quartz sand and silicon powder are weighed, is mixed and stirred for uniformly, obtaining mixed powder a；
B. it weighs distilled water and water-reducing agent mixing mixes thoroughly to obtain mixed solution b；
C. mixed powder a is added in mixing liquid material b, is stirred using high-strength blender；
D. the material mixed is poured into the mold made in advance, pays attention to controlling speed of perfusion, with 30-40m3/h
Speed uniformly pour at a slow speed；；
E. it after the completion of pouring, places shaking platform and fixes, vibrate 2 minutes or so by frequency appropriate, do not have to surface of test piece
Until having bubble spilling；
F. analog material stands 12h or so demoulding at dry and ventilated indoors；
G. it is transferred to after demoulding in the curing pool that temperature is 20 DEG C and conserves completion test specimen production in 28 days.
Embodiment 2:
The one type sandstone material of the present embodiment, including coarse aggregate quartz sand, fine aggregate silicon powder, cementing material cement, add
Add agent polycarboxylate water-reducer, distilled water, wherein each constituent is according to parts by weight, cement: quartz sand: silicon powder: distilled water: subtracts
Aqua=16:18:3.2:5.2:0.25.
Preparation method is similar to Example 1, and details are not described herein again.
Embodiment 3:
The one type sandstone material of the present embodiment, including coarse aggregate quartz sand, fine aggregate silicon powder, cementing material cement, add
Add agent polycarboxylate water-reducer, distilled water, wherein each constituent is according to parts by weight, cement: quartz sand: silicon powder: distilled water: subtracts
Aqua=20:14:1.8:5:0.15.
Preparation method is similar to Example 1, and details are not described herein again.
The development of analog material first has to select suitable analog material, suitable preparation method and maintenance means, then root
According to the theory of similarity, the likelihood ratio is calculated in conjunction with the physico-mechanical properties of protolith in Practical Project, so that it is determined that the physics of analog material
Mechanics parameter finally makes the analog material for meeting research purpose.
Table 1 list the sandstone analog material (hereinafter referred to as analog material) of the offer of the embodiment of the present invention 1 with from Xinjiang day
The main physico-mechanical parameter of the sandstone material of mountain Highway Lithological Slope acquisition, it can be seen that the physical and mechanical parameter ratio of the two
It is closer to, so, this analog material can be classified as to class sandstone material.
1 Material Physics mechanics parameter of table compares
In the theory of similarity, usually with affinity constant measure prototype and model similarity degree, affinity constant be prototype with
The ratio between physical and mechanical parameter of model should meet following relationship:
C in formula (1)σ、Cγ、Cl、Cμ、Cε、Cf、CE、Cc、CRc、CRt、CδIt respectively corresponds are as follows: stress, density, geometry, Poisson
Than, strain, frictional strength, elasticity modulus, cohesive strength, uniaxial compressive strength, tensile strength and deformation affinity constant.
Affinity constant can be found out according to the physical and mechanical parameter in table 1, is shown in Table 2.In conjunction with Tables 1 and 2, it can be seen that
The physical and mechanical parameter of sandstone and analog material relatively, and substantially meets the relationship of main affinity constant.Therefore, this is similar
Material is as class sandstone material.
The affinity constant of 2 prototype of table and model sample mechanics index of physics
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of sandstone analog material, which is characterized in that its composition component includes:
Aggregate: quartz sand and silicon powder；
Cementing material: cement；
Additive: water-reducing agent and distilled water.
2. a kind of sandstone analog material according to claim 1, it is characterised in that: the constituent is based on parts by weight
Are as follows: 15-25 parts of cement, 12-20 parts of quartz sand, 1.5-3.5 parts of silicon powder, 4-7 parts of distilled water, 0.1-0.5 parts of water-reducing agent.
3. a kind of sandstone analog material according to claim 1, it is characterised in that: the quartz sand particle size is 50-120
Mesh, the silicon powder partial size are 200-350 mesh.
4. a kind of sandstone analog material according to claim 1, it is characterised in that: the cement is label 425 or 525
Portland cement.
5. a kind of preparation method of such as described in any item sandstone analog materials of Claims 1-4, which is characterized in that including such as
Lower step:
1) will based on parts by weight cement 15-25 parts, 12-20 parts and silicon powder 1.5-3.5 parts of quartz sand are mixed and stirred for uniformly, obtaining
To mixed powder a；
2) will based on parts by weight distilled water 4-7 parts, 0.1-0.5 parts of water-reducing agent are mixed and stirred for uniformly, obtaining mixed solution b；
3) the mixed powder a is added into the mixed solution b, after being sufficiently stirred, is uniformly poured into mold at a slow speed, with
Mold placement shaking platform is fixed and vibrated 1-3 minutes afterwards, stands 10-14h demoulding, demoulding at dry and ventilated indoors
It is transferred in the curing pool that temperature is 20 DEG C afterwards and conserves 26-30 days acquisition finished products.
6. a kind of preparation method of sandstone analog material as claimed in claim 5, which is characterized in that the speed of perfusion is
30-40m3/h。
7. a kind of application of sandstone analog material according to any one of claims 1-4 in terms of civil engineering.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110294617A (en) * | 2019-07-11 | 2019-10-01 | 中国地质大学（武汉） | A kind of sandstone analog material and preparation method thereof based on Frozen-thawed cycled model test |
| CN110320122A (en) * | 2019-06-12 | 2019-10-11 | 华北水利水电大学 | The accurate detection method of rock forming mineral degree of abrasion |
| CN110836929A (en) * | 2019-11-26 | 2020-02-25 | 中国科学院武汉岩土力学研究所 | Jointed rock mass vibration attenuation physical simulation test method and device |
| CN111398568A (en) * | 2020-04-23 | 2020-07-10 | 六盘水师范学院 | Solid-liquid coupling physical similarity simulation material for coal seam mining and use method thereof |
| CN111579374A (en) * | 2020-06-01 | 2020-08-25 | 山东大学 | Rock-like material for simulating reservoir rock heterogeneity and test piece preparation method |
| CN112113813A (en) * | 2020-09-09 | 2020-12-22 | 山东大学 | Limestone-like similar material and preparation method and application thereof |
| CN112723819A (en) * | 2020-12-24 | 2021-04-30 | 武汉理工大学 | Rock-like material, and intelligent piezoresistive testing system and method using rock-like material |
| CN115964931A (en) * | 2022-11-04 | 2023-04-14 | 广西大学 | Theory, method and formula for preparing materials with similar dynamic and static characteristics of rock high-strength Gao Cui |
| CN117585959A (en) * | 2023-11-21 | 2024-02-23 | 山东大学 | CO (carbon monoxide) 2 Sandstone similar material for geological sequestration model test of salt water layer and preparation method thereof |
| CN117776663A (en) * | 2024-01-02 | 2024-03-29 | 成都理工大学 | Preparation method and application of oil-containing artificial zeolite sandstone |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320122A (en) * | 2019-06-12 | 2019-10-11 | 华北水利水电大学 | The accurate detection method of rock forming mineral degree of abrasion |
| CN110320122B (en) * | 2019-06-12 | 2022-06-10 | 华北水利水电大学 | Accurate detection method for rock mineral abrasiveness |
| CN110294617A (en) * | 2019-07-11 | 2019-10-01 | 中国地质大学（武汉） | A kind of sandstone analog material and preparation method thereof based on Frozen-thawed cycled model test |
| CN110836929B (en) * | 2019-11-26 | 2021-01-19 | 中国科学院武汉岩土力学研究所 | Jointed rock mass vibration attenuation physical simulation test method and device |
| CN110836929A (en) * | 2019-11-26 | 2020-02-25 | 中国科学院武汉岩土力学研究所 | Jointed rock mass vibration attenuation physical simulation test method and device |
| CN111398568A (en) * | 2020-04-23 | 2020-07-10 | 六盘水师范学院 | Solid-liquid coupling physical similarity simulation material for coal seam mining and use method thereof |
| CN111579374A (en) * | 2020-06-01 | 2020-08-25 | 山东大学 | Rock-like material for simulating reservoir rock heterogeneity and test piece preparation method |
| CN112113813A (en) * | 2020-09-09 | 2020-12-22 | 山东大学 | Limestone-like similar material and preparation method and application thereof |
| CN112113813B (en) * | 2020-09-09 | 2022-06-03 | 山东大学 | Limestone-like similar material and preparation method and application thereof |
| CN112723819A (en) * | 2020-12-24 | 2021-04-30 | 武汉理工大学 | Rock-like material, and intelligent piezoresistive testing system and method using rock-like material |
| CN115964931A (en) * | 2022-11-04 | 2023-04-14 | 广西大学 | Theory, method and formula for preparing materials with similar dynamic and static characteristics of rock high-strength Gao Cui |
| CN115964931B (en) * | 2022-11-04 | 2023-09-05 | 广西大学 | Theory, method and formula for preparing rock materials with high strength and high brittleness and similar dynamic and static characteristics |
| CN117585959A (en) * | 2023-11-21 | 2024-02-23 | 山东大学 | CO (carbon monoxide) 2 Sandstone similar material for geological sequestration model test of salt water layer and preparation method thereof |
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